Forthcoming articles

International Journal of Materials Engineering Innovation

International Journal of Materials Engineering Innovation (IJMatEI)

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International Journal of Materials Engineering Innovation (8 papers in press)

Regular Issues

  • Investigation and Wear Analysis of Al-SiCp Nano Composites and Study of its Machinability using Electro Discharge Machining   Order a copy of this article
    by Pradyut Kumar Swain, Kasinath Das Mohapatra, Pratyush Kumar Swain, Ratnakar Das 
    Abstract: The present research work has been given the importance on proper distribution of silicon carbide nano particles with different volume fractions of 1%, 1.5% and 2% in the aluminium metal matrix. The paper also deals with the wear analysis of the developed Al-SiCp nano composite by using dry sliding wear test with pin on disc machine. XRD analysis of the Al-SiCp nano composite work material has been performed to determine the purity and grain size of the sample. The present work also focuses on metal matrix nano composites during Electric discharge machining (EDM) process using brass, aluminium and copper as tool electrodes. Electrode wear ratio (EWR) of the tool as well as material removal rate (MRR) of the workpiece has been determined and it was found that copper is the best and preferable electrode followed by aluminium and brass electrodes due to its higher MRR and lower EWR.
    Keywords: Wear; Material removal rate; Electrode wear ratio; Electro Discharge Machining; XRD; Nano Composite; Purity; Grain size.

  • Influence of substrate bias on performance of diamond coating on WC cutting inserts for machining of aluminium by HFCVD process   Order a copy of this article
    by Dilip Kuma Sahu, Saroj Kumar Sarangi, Kakarla Udaya Sri 
    Abstract: The most important factors during deposition on different carbide base cutting tool inserts by using Hot Filament Chemical Vapour Deposition (HFCVD) method are nucleation and growth of diamond. The negative dc biasing is the most outstanding technique in HFCVD method for improving the nucleation on the substrate surface. In the present investigation, the main objective is to analyse the influence of bias voltage on the WC substrate for nucleation, growth, adhesion and quality of diamond coating along with evaluation of machining performance in dry environment. Finally it has been confirmed that higher nucleation density including good quality diamond coatings along with reduced cutting force and better work surface finish were achieved under a definite reaction pressure with negative substrate bias.
    Keywords: nucleation; coating; substrate bias; adhesion.

  • Magnetoelectricity of Barium Titanate/Cobalt Ferrite Nanoparticles Incorporated into Poly(vinylidene fluoride-co-trifluoroethylene) Copolymer Films   Order a copy of this article
    by Morad  
    Abstract: Incorporating ferroelectric and ferromagnetic nanoparticles into copolymers can produce composites with novel properties for broad applications especially in electronics. In this research, nanoparticles of barium titanate (BTO) and cobalt iron oxide (CFO) were chemically synthesized and then individually incorporated in Poly(vinylidene fluoride-co-trifluoroethylene) to form multi-layered magnetoelectric film. BTO-P(VDF-TrFE)/CFO-P(VDF-TrFE)/BTO-P(VDF-TrFE) sandwich type films -(20-30
    Keywords: Multiferroics; Barium Titanate; Cobalt Ferrite; Magnetoelectric; Nanoparticles; Film.

  • Investigating the significance of SiC particle size on the mechanical properties of Cu-6Sn-SiC composite   Order a copy of this article
    by Karthik. V. Shankar, Mr Ajay Gosh, Sudhin C B, Arvind S. Pai, Akshay Biju, K.R. Sriram 
    Abstract: The existing research is to manufacture bronze metal matrix composite with varying average SiC particle size (30
    Keywords: SiC particle size; Bronze metal matrix; mechanical properties; fracture; Cu-Sn.

  • Monitoring of Hole Quality in Friction Drilling using different Machine Learning Techniques   Order a copy of this article
    by Narayana Moorthy N, Kanish T.C 
    Abstract: The present investigation deals with monitoring the bush and collar formation during the friction drilling process of Be-Cu alloy. Being the aerospace-grade material having a combination of better mechanical properties and corrosion resistance, this alloy has been chosen for the study. As the alloys are usually subjected to extreme heat during the friction drilling process, they are often prone to damage in terms of alteration in the structure as well as irregular bush formation. Hence, monitoring the quality of the hole during the process becomes inevitable when it comes to the hard and tough materials like Be-Cu alloy. In the current study, the quality of the drilled hole was monitored using different machine learning (ML) techniques vis-
    Keywords: Friction drilling; Bush formation; Wavelet Transform; Feature extraction; Classifiers.

  • Effect of Curing Degree on Thermal Properties of Epoxy Adhesive Layer in Laminating-Pressed Flexible Printed Circuit Panels   Order a copy of this article
    by Kok-Tee Lau, Hoi Ern Kok, Nur Hazirah Rosli 
    Abstract: The current paper investigates the feasibility of thermal characterisation to measure the difference in curing degrees of the adhesive layer of laminated copper-clad laminate (CCL) using differential scanning calorimetry and thermogravimetric analysis (TGA) according to IPC standards. Polyimide-epoxy adhesive coverlays were laminated onto both sides of the CCL at 120 kgf/cm2 pressure and 180
    Keywords: flexible electronics; FPC; flexible printed circuit; flexible PCB; epoxy adhesive; coverlay lamination; thermal properties; curing degree; differential scanning calorimetry; DSC; thermogravimetric analysis; TGA; adhesive thickness; thickness measurement; IPC standards.

  • Friction and Wear Behavior of HVOF Sprayed Cr2O3-TiO2 Coatings on Aluminum Alloy   Order a copy of this article
    by Pradeep Kumar G S, Keshavamurthy R, Prabhu Akhil M, Kiran K, Mervin Thomas, Vijay Tambrallimath, Gurumoorthy S. Hebbar 
    Abstract: This study investigates the tribological behavior of Cr2O3-TiO2 composite coatings deposited on Aluminum 6061 alloy. Cr2O3-TiO2 composite coatings were deposited by High velocity oxyfuel (HVOF) technique. Developed coatings were subjected to microstructure studies, microhardness test (ASTM E92), friction and wear test (ASTM G99). Pin-on-disc machine was used to evaluate friction and wear characteristics of Cr2O3-TiO2 coatings. Effect of sliding velocity (0.314-1.26m/s) and load (20N-100N) on friction and wear characteristics of Cr2O3-TiO2 coatings were studied and compared with uncoated aluminum alloy. Results showed 54% improvement in hardness of Cr2O3-TiO2 coatings in comparison with aluminum alloy. Coefficient of friction and wear rate decreases by 12% and 48% respectively when evaluated with uncoated aluminum alloy. Coefficient of Friction (COF) and wear rate increases with increase in load and sliding velocity for both coatings and substrate. However, Cr2O3-TiO2 coatings showed lower wear rate and COF at all the loads and sliding velocities studied when compared with uncoated aluminum alloy. Worn out surfaces of uncoated and Cr2O3-TiO2 coated surfaces were subjected to SEM analysis to understand the wear mechanisms in composite coatings.
    Keywords: HVOF Coatings; Cr2O3; TiO2; Al6061 alloy; friction and wear; Hardness.

  • Effect of Cu co-doping on the microstructure and optical properties of alumino-zinc thin films for optoelectronic applications
    by Ali Abou Hammad1, Amany El Nahrawy, Doaa Atia, Hanaa El-madany, Abdelfatah Mansour 
    Abstract: The effect of copper (Cu) co-doping on the microstructure and optical properties of zinc aluminate (AZO) thin films have been investigated. The micro-structure of prepared (Cu/AZO) thin films were described by X-ray diffraction (XRD), Fourier Transform-Infrared (FTIR), and scanning electron microscopy (HR/SEM). The optical properties are studied via UV-Vis spectrophotometry system. The XRD shows a cubic crystalline phase of the pure film and the addition of Cu did not change the cubic structure in the doped films. The vibrational bands due to the Cu–O bond have been observed at 415- 851 cm-1 in the FTIR spectra of Cu/AZO films. HR-SEM shows that both pure and doped films are quite homogeneous with good connectivity and the grain boundaries increase with increasing Cu which leads to enhancement of densification and the crystallinity of the films. Optical investigations of Cu/AZO films show a decrease in the bandgap values from 3.87 eV to 3.83 eV with increasing of Cu contents.
    Keywords: Co-doping; Microstructure; Optical properties; Alumino-zinc; AlZnO-Thin films; Optoelectronic.